well it depends on what drug test you're taking, instant ones can have a lot of false positives. I pissed positive for thc/pcp once from taking amantadine, they sent the sample to lab and my name was eventually cleared.
I very much want to try these cannabinoids. I've read as many trip reports as I could find and it sounds great to me, considering pot is pretty much my favorite drug...even though I don't really consider it a drug so much as a necessity in life.